This name is a synonym of Stachytarpheta cayennensis (Rich.) Vahl.
The record derives from WCSP
(data supplied on 2012-03-26)
which reports it as a synonym (record 212244) with original publication details: Fl. Peruv. 1: 23 1798.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:330585-2.
This name was in version 1 of The Plant List, record kew-212244.